Plasma display screen barrier slurry and preparation method thereof

Abstract

The invention relates to barrier slurry, in particular to plasma display screen barrier slurry and a preparation method thereof. The plasma display screen barrier slurry comprises 60 to 75 percent of glass powder and 25 to 40 percent of organic carrier, wherein the glass powder comprises 25 to 35 percent of diboron trioxide (B2O3), 20 to 30 percent of barium oxide (BaO), 5 to 10 percent of phosphorus pentoxide (P2O5), 0 to 20 percent of zinc oxide (ZnO), 0 to 20 percent of aluminum oxide (AL2O3) and 0 to 15 percent of copper oxide (CuO), ceric oxide (CeO2), lithium oxide (Li2O) or sodium oxide; and the organic carrier comprises 3.0 to 15 percent of polymer, 76 to 95 percent of organic solvent, 1.5 to 16 percent of film-forming auxiliary agent and 0.1 to 0.9 percent of gas-phase method silicon dioxide (SiO2) powder. By the plasma display screen barrier slurry and the preparation method thereof, dispersing property of the glass power is improved; levelling property and thixotropic property of the barrier slurry are improved; the defects of sinking, bubbling and the like of the barrier slurry subjected to coating and sintering are overcome; the manufacturing process is simple; the finished product ratio is high; and mass production is performed easily.

Description

technical field [0001] The invention relates to a slurry for barrier ribs, in particular to a slurry for barrier ribs of a plasma display screen and a preparation method thereof. Background technique [0002] Plasma display screen is a flat panel display device that uses gas discharge to emit light independently, and is composed of a large number of plasma discharge cells. Each discharge cell is composed of a bus electrode, a dielectric protection layer, a barrier structure, phosphor powder, and an inert gas. When high voltage is applied to the bus electrode covered under the dielectric protection layer, the inert gas sealed in the barrier structure discharges to generate ultraviolet light, thereby exciting the red, green and blue tricolor phosphor layer on the inner wall of the barrier structure to emit visible light. [0003] There are three main functions of the barrier in the plasma display screen: one is to ensure the discharge gap between the front and rear substrates...

AI Technical Summary

Problems solved by technology

But the disadvantage is that the barrier coating has high requirements, and the barrier slurry needs to have high leveling performance. After the coating is sintered, there should be no defects such as depressions, protrusions, and bubbles.